× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

U0073 Diagnostic Trouble Code Discussion for February 2020

Control Module Communication Bus Off


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC U0073
Help Request Posted
2013 Chevrolet Equinox LT 2.4L No Start, MIL Lamp on VIN: 2GNFLEEK2D
U0073: CAN bus fail. ... u0073, u0101, u0121 and u0140 stored in ECM. Similar communication codes in BCM, TCM, ABS. Check wire harnes at rear diff for corrosion and chaffed wires, all good. Inspected connections at each module, wiggle test wires with multi-meter on date lines....
February 04, 2020